PolyScape™ Product Information – Frequently Asked Questions
What Hardware Should Be Used?
In general, PolyScape™ materials use the same fasteners and brackets that normal wood lumber uses.
We recommend using hex head structural lag screws when attaching joist hangers to beams, columns, or rim joists. Torx head exterior wood screws can be used for joining PolyScape™ materials together for blocking, reinforcement, or general use.
We would also recommend that when fastening boards that will be visible (e.g., on the top of a step), that the installer pre-drills the boards being fastened to avoid stripping or cracking the materials when using power tools.
PolyScape™ materials can also be nailed together using a pneumatic nail gun. Galvanized nails should be used, and care must be taken when installing. Due to the force and speed of the nail entering the plastic material, plastic will melt/bond to the nail, making it extremely difficult to remove.
Stainless steel fasteners can also be used, but care should be taken when installing to not break the fasteners due to over-torquing with an impact driver.
All hardware brackets should be either stainless steel or galvanized if installed in an outdoor environment.
What Certifications Do You Have for PolyScape™?
We are currently working with a third-party certification body to develop a product listing for our PolyScape™ product line.
As part of the third-party certification, our materials are rigorously tested against all applicable standards of the building code relating to structural members and dimensional plastic lumber.
Once completed, a Technical Evaluation Report (TER) will outline all necessary information for the design and use of PolyScape™ materials.
This accreditation will also apply to all countries that recognize the American National Accreditation Bureau standards.
What Is the Flame/Fire Rating?
PolyScape™ products have been tested according to the E84 flame spread ASTM standard.
Testing has shown that Ultra Grade PolyScape™ products have a flame spread index value of 80 and a smoke development index of 800. This corresponds to a Class “C” rating.
Fire-retardant materials can be added during the PolyScape™ manufacturing process to improve these values.
Are There Applicable Span Charts?
Yes, K-Play has a span chart table outlining the maximum spans based on loading and environmental conditions.
These values are based on ASTM D2109 data from both "joist" and "plank" mode testing.
As part of the third-party certification, approved span tables from licensed structural engineers will outline these values.
Current values reflect assumptions based on environment, weathering, and load cycling. These values are not approved by a licensed professional engineer.
Please consult your local building code to determine what is required in your area.